Yes, absolutely. You also have to keep in mind that there is some angle at which a corner of the body will hike up rather than settle down depending on the angle from the center of gravity to the tire patch. The VW bug suffered from that at times. So that wider stance both reduces roll over, but also avoids that hike-up, where it will try and tuck under the car at the out-side of the turn.
The reason the Aptera has a high CG is for lower aerodynamic drag. There are two ways to control that drag from interacting with the ground.
First is to decouple by either moving away from it, or to reduce turbulent flow by having a smooth under belly and other 'channeling'. Both in the case of the Aptera.
The second is to create a dam effect which just makes a low pressure area under there with very little air to 'turbulate' under there. Most of the air is forced up and over, or to the side of the car. This second way is less efficient but does give a down force holding the car down. And that is extra energy consumed.
Obviously race cars prefer the dam effect. But Aptera, wanting the lowest drag possible is doing the first method. Hence they require the wider stance to mitigate the other tradeoffs. Race cars also use 'channeling' but mostly to get more downforce.
Finally, about out rigger wheels, if you have an object that blocks air flow, close to a body, it can create turbulent air along the whole body. Moving this wheel out, separates it's flow pattern from the body's pattern. Both have a better chance to manage air-flow.
Aptera is optimized for the best aerodynamics in a sociable seater, in trade for other attributes, like difficult parking.
My Atlantric design, attempts to both dam the air, and have a smooth underbelly, but will not do as well as the Aptera in that zone. To mitigate the issue and keep a lower more narrow width, it uses tandem seating. Overall, competing very well with the Aptera for aerodynamic energy used. And I can still park it easily.
I gotta admit, people prefer to sit higher, rather than lower. And also Sociable above Tandem. Unless they care about lower drag and know about this trade off.
So let's look at the weird issue of ride height. If you have a dam(damn) effect at two different ride heights for the same body, the taller one represents a taller frontal area, because the grounded air is acting like part of the body, basically a larger overall frontal area.
But if that dam effect changes between the two positions, all bets are off. It depends on the flow characteristics the higher position encounters.
Strictly speaking, Aptera resulted from extensive aerodynamic design and testing over the whole body form, but very intensely around that underbelly. They were so happy with the result, only then they decided lets try and produce this as a real commodity!
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………also seasonal in the snow belt States. 
